Governor for internal-combustion engines.



W. H. HIMES.

GOVERNOR FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED MAYZB, 1913.

Patented Mar. 17, 1914.

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WALTER H. HIMES, OF LANSING, MICHIGAN.

GOVERNOR FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Mar. 17, 1914.

Application filed May 28, 1913. Serial No. 770,321.

To alt whom it may concern 1 extends across the inclined face of thewedge lie it known that I, VVAL'IER ll. Hints, at /L at a pointcoincident with the center of citizen of the United States, and aresident of Lansing, in the county of Ingham, State of Michigan, haveinvented certain new and useful Improvements in Governors forInternal-Coi'nbustion Engines, of which the following is a full andclear specification, reference being had to the accompanying drawings,in which-- Figure 1 is a plan view of my device ap plied to a well knowntype of horizontal single cylinder internal combustion engine; Fig. 2 isa side elevation of the same; and, Figs. 3 and iare detail plan viewsshowing modifications of the push-rod engaging device.

The object of this invention .is to provide simple and durable governormechanism which will operate without back-lash or lost motion and willtherefore not only be sensitive and accurate in performing its functionbut will also be practically noiseless, as more fully hereinafter setforth.

In the drawing, the letter a designates the usual push-rod which whenprojected by the cam b on the cam pin or shaft 0 will open the exhaustvalve in the usual manner and which when locked in its projectedposition will hold the exhaust valve open and thus throw the engine outof cycle. It will be obvious that it is within the spirit of myinvention to utilize the push-rod a to throw the engine out of cycle insome other manner than by holding the exhaust valve open; for instance,this rod a may be arranged to actuate the sparker and when held in itsprojected position, so as to be out of the influence of the cam b, itwill destroy the cycle by rendering the sparker inoperative.

The letter (Z designates a cam gear of the usual sort, journaled to thecam shaft 0, and pivoted at e on the outer face of this gear is acentrifugally operated governor-weight j, normally pulled inwardlytoward the center of the shaft by means of a spring g. Rigidly attachedto the weight and extending across the center of the pin or shaft 6 is awedge-shaped arm it, this arm being so attached to the wei ht and socurved that when the weight is moved inwardly or outwardly this arm willbe moved in a corresponding direction across the center of the shaft orpin 6.

Pivoted on a lug supported on the engine frame is a lever j one of whoseends the shaft and is there provided with a pin It which is normallyheld pressed against the face of the wedge, at a point coincident withthe axis of the shaft, by light spring 1 connecting the lever to theengine frame. The other end of the lever j is extended to a pointadjacent to one face of the push-rod, so that when this end of the leveris swung toward the push-rod it will engage behind a stop at carried bythe push-rod and thus lock the push-rod in its cycle-destroyingposition.

Any suitable means may be attached to the outer end of the lever j forengagement with the lock plate m. In Figs. 1 and 2 I show a Hat spring ariveted to the lever and adapted to be adjusted by means of a setscrew0, this adjustment being essential in order to readily vary the time ofengagement of the spring a with the push-rod and thus regulate the speedof the engine.

Instead of using the spring a, I may simply use the screw shown at p inFig. 3, the inner end of this screw being beveled to interlock with thestop block m on the push'rod. To take up wear and to lock the screw 1)against being jarred loose, the end of the arm may be split and clampedtightly on the screw by means of a clamp screw '1'.

In the modification shown in Fig. i, I shorten the inner end of thelever and pivot thereon a supplemental lover 8 whose inner end isprovided with the wedge-engaging pin l: and whose outer end is connectedto the outer end of the lever y by a resilient connection consisting ofa set-screw t and a spring 14 inserted between the lever j and the lovers. \Vith this device, adjustment of the screw 1; varies the time ofengagement of the latch lever with the pushrod. The spring it takes upwear of the parts and prevents noise. The connection of the lover s tothe inner end of the lever j may be by means of a screw o and acoil-spring w for the purpose of takin up wear and preventing noise atthat point. It will be observed that any other suitable means may beemployed for utilizing the movement of the pin 7; to lock the push-rodin its projected position.

It will be seen also that it is within the sphere of my invention to usemy apparatus for operating so-called tln'ottle-governcd explosiveengines as well as the hit-and-miss type. In this case the swinginglever j Would be connected to a suitable damper in the carbureter and inthat manner provide for a throttling action as Well as a hit-andmissaction.

I claim 2- 1. The combination With an engine embodying a push-rod andmeans for projecting the same of a Wheel mounted on the engine, acentrifugally operated governor Weight mounted on one face of said Wheeland carrying a Wedge-shaped member lying close to the face of the Wheeland extending across the axis of the Wheel, and a latch lever for thepush-rod carrying a pin which bears upon the inclined face of said Wedgemember, a spring being provided to hold said pin normally against saidinclined face.

2. The combination with an engine em- Gopies of this patent may beobtained for bodying a push-rod, a cam for projecting the same and agear Wheel for operating said cam of a centrifugally operated governorWeight mounted on one face of said Wheel and carrying a Wedge-shapedmember extending across the center of the Wheel and having its inclinedside facing away from said Wheel, a latch lever for the push-rodcarrying a pin extending toward the inclined face of said Wedge member,and a spring holding said pin normally against said inclined face.

In testimony whereof I hereunto aiiix my signature in the presence oftwo Witnesses. WALTER H. HIMES. Vitnesses L. C. ABBOTT, C. A. SI-IRAY.

five cents each, by addressing the Commissioner of lfatcntsv Washington,D. C.

